3 three braking units in parallel – Yaskawa Varispeed-686SS5 CIMR-SSA User Manual
Page 79
80
3.3
THREE BRAKING UNITS IN PARALLEL
For Models CIMR-SSA2030 to -SSA2075 (200 V Class 30 to 75 kW)
B
B
6
P
2
2
P
B
3-Phase
Power Supply
200 to 230 V
50/60 Hz
r
3
4
5
6
7
8
Thermal Overload
Protector
1
2
Braking
Resistor
Unit
P
1
2
3
4
Thermoswitch
5
6
Level
Detection
MASTER
+15
Braking Unit 3
Braking Unit 2
1
3
4
Thermoswitch
5
MASTER
SLAVE
Thermal Overload
Protector
1
2
Braking
Resistor
Unit
P
Thermal Overload
Protector
1
2
Braking
Resistor
Unit :
P
MASTER
SLAVE
3
4
Thermoswitch
5
6
Cooling
Fan
M
R
S
T
R
S
T
MCCB
MC
¨
3
©
U
V
W
Motor
M
Ground (100Ω or less)
Analog
Monitor 1
(12)
21
22
23
+
AM
+
−
Multi-function Analog Output
-10 to +10V 2mA
(Output Current at Factory
Setting)
SM
Multi-function Analog Output
-10 to +10 V 2mA
(Rotation Speed at Factory
Setting)
−
18
Multi-function Open
Collector Output
48 V 50 mA or less
Multi-function
Output Common
27
Open Collector 2
(Speed Agree Signal
at Factory Setting)
26
Open Collector 1
(Zero Speed Signal at
Factory Setting)
25
Multi-function Contact Output
250 VAC 1 A or less
30 VDC 1A or less
(Signal during Running at Factory
Setting)
10
9
20
19
Fault Contact Output
250 VAC 1 A or less
30 VDC 1 A or less
THRX
OFF
ON
MC
SA
Overload Relay Trip Contact
of Braking Resistor Unit
1
2
MC
TRX
TRX
20 18
Fault
Contact
SA
SA
THRX
MC
Braking Unit
3
4
Forward Run/Stop
Reverse Run/Stop
Factory
Setting
External Fault
Fault Reset
Multi-step Speed Setting 1
(Master/Aux Change)
Multi-step Speed
Setting 2
Jog Reference
External Baseblock
2 kΩ
2 kΩ
0 to +10 V
4 to 20 mA
P
0 to +10 V
P
0 V
P
17 (Aux Speed Ref. at
Factory Setting)
15 Speed Setting Power
Supply +15V 20mA
11
0 V
1 Forward Run when
CLOSED
2 Reverse Run when
CLOSED
Multi-function
Contact Input
Sequence Common
Terminal (0V)
12
Shield Sheath
Connection Terminal
13 Master Speed Ref.
0 to 10V (20kΩ)
14 Master Speed Ref.
4 to 20mA (250Ω)
33 Speed Setting Power Supply
-15V 20mA
1
16 Multi-function Analog Input
0 to 10V (20kΩ)
Analog
Monitor 2
(ℓ
2
)
(ℓ
1
)
Use sequencer to break
power supply side on
overload relay trip contact
of braking resistor unit.
VS-686SS5
¨
0
¨
©
©
0
¨
0
¨
©
©
0
¨
0
¨
©
©
0
External
Speed
Reference
:
When using the braking resistor unit, set constant L3-01 to “0” (overvoltage prevention selection
disabled). If it is not changed, the inverter may not stop within set decel time.
18
20